package host

import (
	"bytes"
	"context"
	"crypto/ecdh"
	"encoding/base64"
	"encoding/json"
	"log"
	"os"
	"path/filepath"
	"strings"
	"sync"
	"testing"
	"time"

	"github.com/carlosframework/platform/internal/appconfig"
	"github.com/carlosframework/platform/internal/edgesfile"
	"github.com/carlosframework/platform/internal/moves"
	"github.com/carlosframework/platform/internal/registry"
	"github.com/carlosframework/platform/internal/release"
	"github.com/carlosframework/platform/internal/status"
)

func edgesTestRegistry(t *testing.T) *registry.Registry {
	t.Helper()
	reg, err := registry.Open(filepath.Join(t.TempDir(), "registry.db"))
	if err != nil {
		t.Fatal(err)
	}
	t.Cleanup(func() { reg.Close() })
	return reg
}

// seedRoute upserts a minimal ready route under the given host — any served
// kind does for these tests, since edgesFilePass folds every kind in
// (the serving-class split is the reader's business, Task 3).
func seedRoute(t *testing.T, reg *registry.Registry, host string) {
	t.Helper()
	if err := reg.Upsert(registry.Route{Host: host, Kind: "service", Addr: "10.0.0.1:3000", Status: "ready"}); err != nil {
		t.Fatal(err)
	}
}

// putCountingStore wraps a release.Store and counts Put calls — the same
// wrap-and-count idiom agent_test.go's countingStore uses for Get, applied
// to Put so the change-gate test can pin "second identical pass writes
// nothing" without inspecting store internals.
type putCountingStore struct {
	release.Store
	puts int
}

func (p *putCountingStore) Put(ctx context.Context, key string, body []byte, ifMatch string) (string, error) {
	p.puts++
	return p.Store.Put(ctx, key, body, ifMatch)
}

func TestEdgesFilePublishesHomedHosts(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")
	var lastBody []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &lastBody); err != nil {
		t.Fatal(err)
	}
	got, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f edgesFile
	if err := json.Unmarshal(got, &f); err != nil {
		t.Fatal(err)
	}
	if f.V != 1 || f.Box != "annie" || f.EIP != "1.2.3.4" {
		t.Fatalf("file = %+v", f)
	}
	if r, ok := f.Hosts["app.example.com"]; !ok || r.Role != "home" {
		t.Fatalf("hosts = %+v", f.Hosts)
	}
	if f.Generation == "" {
		t.Fatal("generation must be stamped")
	}
	if got, want := edgesFileKey("annie"), "control/edges/annie.json"; got != want {
		t.Fatalf("edgesFileKey = %q, want %q", got, want)
	}
}

// A box with no discoverable public IP still publishes the file, with
// "eip":"" — the DR runbook's hosts list must not depend on IMDS working.
func TestEdgesFilePublishesWithEmptyEIP(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")
	var lastBody []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "", &lastBody); err != nil {
		t.Fatal(err)
	}
	got, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f edgesFile
	if err := json.Unmarshal(got, &f); err != nil {
		t.Fatal(err)
	}
	if f.EIP != "" {
		t.Fatalf("eip = %q, want empty", f.EIP)
	}
	if _, ok := f.Hosts["app.example.com"]; !ok {
		t.Fatalf("hosts = %+v, want app.example.com present despite empty eip", f.Hosts)
	}
}

func TestEdgesFileSkipsWriteWhenUnchanged(t *testing.T) {
	real := release.NewDirStore(t.TempDir())
	s := &putCountingStore{Store: real}
	reg := edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")

	var lastBody []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &lastBody); err != nil {
		t.Fatal(err)
	}
	if s.puts != 1 {
		t.Fatalf("first pass puts = %d, want 1", s.puts)
	}

	// Second pass, identical registry state: a fresh generation timestamp
	// would differ from the first pass's, but the change-gate excludes
	// Generation, so this must not write.
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &lastBody); err != nil {
		t.Fatal(err)
	}
	if s.puts != 1 {
		t.Fatalf("unchanged second pass puts = %d, want still 1 (no write)", s.puts)
	}

	// A registry change makes the next pass write again.
	seedRoute(t, reg, "second.example.com")
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &lastBody); err != nil {
		t.Fatal(err)
	}
	if s.puts != 2 {
		t.Fatalf("changed third pass puts = %d, want 2", s.puts)
	}
}

// FINDING 1 (review, 2026-08-22): readPublicIP is a single 2s best-effort
// IMDS attempt, re-run every tick — a transient throttle or blip returns ""
// exactly like a box that never had a public IP at all. Without a hold, a
// single hiccuped tick would blank a known-good EIP in the published file,
// costing every remote edge its dial address for this box's home-boxed
// hosts until the next successful tick (up to 5min + jitter). A pass
// reporting "" after a pass that reported "1.2.3.4" must keep "1.2.3.4".
func TestEdgesFileHoldsLastKnownGoodEIPOnTransientBlank(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")

	var last []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}

	// Simulate a transient IMDS blip: this tick's probe returns "".
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "", &last); err != nil {
		t.Fatal(err)
	}

	got, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f edgesFile
	if err := json.Unmarshal(got, &f); err != nil {
		t.Fatal(err)
	}
	if f.EIP != "1.2.3.4" {
		t.Fatalf("eip after a blank probe = %q, want held value %q", f.EIP, "1.2.3.4")
	}
}

// FINDING 2 (review, 2026-08-22, ruling): edge.Reload (internal/edge/edge.go)
// skips any route whose Status != "ready" — that gate is the deployment's
// own definition of "serves", so a pending/creating/failed row must not
// claim role:"home" here either. Hibernating routes stay Status "ready",
// so this filter excludes nothing a remote backhaul could actually reach.
func TestEdgesFileExcludesNonReadyRows(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "ready.example.com")
	if err := reg.Upsert(registry.Route{Host: "creating.example.com", Kind: "service", Addr: "10.0.0.2:3000", Status: "creating"}); err != nil {
		t.Fatal(err)
	}

	var last []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	got, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f edgesFile
	if err := json.Unmarshal(got, &f); err != nil {
		t.Fatal(err)
	}
	if _, ok := f.Hosts["ready.example.com"]; !ok {
		t.Fatalf("hosts = %+v, want ready.example.com present", f.Hosts)
	}
	if _, ok := f.Hosts["creating.example.com"]; ok {
		t.Fatalf("hosts = %+v, want creating.example.com ABSENT (not ready, nothing serves it yet)", f.Hosts)
	}
}

// A sidecar row is READY — that is what makes it runnable — so the readiness
// filter above lets it straight through, and this file is published to every
// box in the deployment. That matters more than it looks: a REMOTE edge has
// no sidecar row and never sees a Kind, so edge.Reload's refusal cannot
// protect it. It misses on its own upstream lookup, reads this file through
// the home map, and backhauls — dialing the home box with the sidecar's own
// name as SNI. The same entry also satisfies deploymentHost, which is what
// admits a name to the cert machinery.
//
// So the guarantee has to be made by the WRITER, exactly as
// publishResidentFleetBindings makes it: a sidecar is never advertised as
// served, by this box or any other.
func TestEdgesFileNeverPublishesASidecar(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "ready.example.com")
	// Minted the way the sidecar reconcile pass mints one: ready, and
	// carrying neither socket nor addr, because nothing dials it.
	if err := reg.Upsert(registry.Route{
		Host: "bot.eleven.bdm.sidecar.internal", Kind: "sidecar",
		App: "eleven", Account: "bdm", Status: "ready", Provisioned: true,
	}); err != nil {
		t.Fatal(err)
	}

	var last []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie"}, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	got, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f edgesFile
	if err := json.Unmarshal(got, &f); err != nil {
		t.Fatal(err)
	}
	if _, ok := f.Hosts["ready.example.com"]; !ok {
		t.Fatalf("hosts = %+v, want the ordinary route still published", f.Hosts)
	}
	if _, ok := f.Hosts["bot.eleven.bdm.sidecar.internal"]; ok {
		t.Fatalf("hosts = %+v, want the sidecar ABSENT — publishing it makes every remote edge a backhaul door onto a member nothing may dial", f.Hosts)
	}
}

// FINDING 3 (review, 2026-08-22): a catch-all claim's registry row is a real
// "*.parent" host (Task 3's reconcile pass derives it the same way
// edge.go's upstream map does). This writer performs no wildcard expansion
// — the row's Host lands in Hosts verbatim, exactly like every other row —
// so an exact-match reader must apply edge.go's lookupUpstream one-label
// rule itself; that contract is documented at the call site and in the
// spec, not enforced here.
func TestEdgesFileWildcardRowPublishesVerbatim(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	if err := reg.Upsert(registry.Route{Host: "*.example.com", Kind: "service", Addr: "10.0.0.3:3000", Status: "ready"}); err != nil {
		t.Fatal(err)
	}

	var last []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	got, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f edgesFile
	if err := json.Unmarshal(got, &f); err != nil {
		t.Fatal(err)
	}
	if r, ok := f.Hosts["*.example.com"]; !ok || r.Role != "home" {
		t.Fatalf("hosts = %+v, want \"*.example.com\" present verbatim with role home", f.Hosts)
	}
}

// FINDING 4 (review, 2026-08-22): every other test in this file round-trips
// through the edgesFile struct on both the write and the assert side, so a
// json-tag rename (e.g. "eip" -> "publicIP") would stay green everywhere
// while breaking Task 3's parser, which reads the wire bytes independently
// of this package's Go types. This test pins the RAW body against a
// hand-written literal matching the brief's exact schema string — every
// byte is fixed except the generation timestamp, which this fixed
// signature has no clock seam to inject (edgesFilePass takes no `now`
// parameter, per the brief's pinned interface); that one field is read
// back and re-inserted into the literal rather than relaxed by a regex.
func TestEdgesFileRawWireBodyMatchesSchema(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")

	var last []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "quiet-harbour", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "203.0.113.10", &last); err != nil {
		t.Fatal(err)
	}
	got, _, err := s.Get(context.Background(), "control/edges/quiet-harbour.json")
	if err != nil {
		t.Fatal(err)
	}

	var probe struct {
		Generation string `json:"generation"`
	}
	if err := json.Unmarshal(got, &probe); err != nil {
		t.Fatal(err)
	}
	if _, err := time.Parse(time.RFC3339, probe.Generation); err != nil {
		t.Fatalf("generation %q is not RFC3339: %v", probe.Generation, err)
	}

	want := `{"v":1,"box":"quiet-harbour","eip":"203.0.113.10","hibernation_configured":false,"serves_shared_pool":false,"accepts_inbound":false,"moves_protocol":0,"seeds_protocol":0,"generation":"` +
		probe.Generation + `","hosts":{"app.example.com":{"role":"home","platform":false}}}`
	if string(got) != want {
		t.Fatalf("raw wire body =\n%s\nwant\n%s", got, want)
	}
}

// FINDING 5 (task 1, 2026-08-22): region is additive to the pinned schema —
// this extends FINDING 4's raw-body pin rather than replacing it. Two
// bodies, byte for byte: an unresolved region (edgesFileRegion's "" case —
// off EC2, no CARLOS_AWS_REGION override) must produce the IDENTICAL bytes
// FINDING 4 already pins (no "region" key at all, omitempty), and a
// resolved region must insert exactly `"region":"eu-west-1"` between "eip"
// and "generation" — the struct field order — with nothing else disturbed.
// This test drives edgesFilePass directly with the resolved value; the
// resolution contract itself (override wins, IMDS otherwise, trimmed) is
// pinned separately in TestEdgesFileRegionResolution.
func TestEdgesFileRawWireBodyRegionField(t *testing.T) {
	t.Parallel()
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")

	genOf := func(t *testing.T, body []byte) string {
		t.Helper()
		var probe struct {
			Generation string `json:"generation"`
		}
		if err := json.Unmarshal(body, &probe); err != nil {
			t.Fatal(err)
		}
		return probe.Generation
	}

	t.Run("unset region is omitted entirely", func(t *testing.T) {
		var last []byte
		if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "quiet-harbour", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "203.0.113.10", &last); err != nil {
			t.Fatal(err)
		}
		got, _, err := s.Get(context.Background(), "control/edges/quiet-harbour.json")
		if err != nil {
			t.Fatal(err)
		}
		gen := genOf(t, got)
		want := `{"v":1,"box":"quiet-harbour","eip":"203.0.113.10","hibernation_configured":false,"serves_shared_pool":false,"accepts_inbound":false,"moves_protocol":0,"seeds_protocol":0,"generation":"` +
			gen + `","hosts":{"app.example.com":{"role":"home","platform":false}}}`
		if string(got) != want {
			t.Fatalf("raw wire body (region unset) =\n%s\nwant\n%s", got, want)
		}
	})

	t.Run("set region is inserted between eip and generation", func(t *testing.T) {
		s2, reg2 := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
		seedRoute(t, reg2, "app.example.com")
		var last []byte
		if err := edgesFilePass(context.Background(), s2, reg2, edgesFile{Box: "quiet-harbour", Region: "eu-west-1", Placement: "", DataBucket: "", DataBucketRegion: ""}, "203.0.113.10", &last); err != nil {
			t.Fatal(err)
		}
		got, _, err := s2.Get(context.Background(), "control/edges/quiet-harbour.json")
		if err != nil {
			t.Fatal(err)
		}
		gen := genOf(t, got)
		want := `{"v":1,"box":"quiet-harbour","eip":"203.0.113.10","region":"eu-west-1","hibernation_configured":false,"serves_shared_pool":false,"accepts_inbound":false,"moves_protocol":0,"seeds_protocol":0,"generation":"` +
			gen + `","hosts":{"app.example.com":{"role":"home","platform":false}}}`
		if string(got) != want {
			t.Fatalf("raw wire body (region set) =\n%s\nwant\n%s", got, want)
		}
	})
}

// Plan re-ruling (2026-08-23, review catch): CARLOS_REGION is the CARLOS
// placement code ("ie"), NOT an AWS region — Task 5's
// ChangeResourceRecordSets would reject it batch-wide, so the field's
// value must come from CARLOS_AWS_REGION / IMDS instead, never
// CARLOS_REGION. edgesFileRegion is the pure half of that contract
// (getenv/probe-injectable, domainsTickConfig's own shape) — this pins
// override-wins, unset-and-no-probe-answer → "", and trimming on both
// inputs, all without a live IMDS server.
func TestEdgesFileRegionResolution(t *testing.T) {
	env := func(m map[string]string) func(string) string {
		return func(k string) string { return m[k] }
	}

	cases := []struct {
		name   string
		env    map[string]string
		probed string
		want   string
	}{
		{
			name:   "override set wins over the probed value",
			env:    map[string]string{"CARLOS_AWS_REGION": "eu-west-1"},
			probed: "us-east-1",
			want:   "eu-west-1",
		},
		{
			name:   "override set, untrimmed, wins and is trimmed",
			env:    map[string]string{"CARLOS_AWS_REGION": "  eu-west-1  "},
			probed: "us-east-1",
			want:   "eu-west-1",
		},
		{
			name:   "override unset falls back to the probed value",
			env:    map[string]string{},
			probed: "eu-west-1",
			want:   "eu-west-1",
		},
		{
			name:   "override unset, probed value untrimmed, is trimmed",
			env:    map[string]string{},
			probed: "  eu-west-1  ",
			want:   "eu-west-1",
		},
		{
			name:   "CARLOS_REGION (the placement code) is never consulted",
			env:    map[string]string{"CARLOS_REGION": "ie"},
			probed: "",
			want:   "",
		},
		{
			name:   "unset override and no probe answer (off EC2) is empty, not an error",
			env:    map[string]string{},
			probed: "",
			want:   "",
		},
		{
			name:   "blank override (set but empty) does not shadow the probed value",
			env:    map[string]string{"CARLOS_AWS_REGION": ""},
			probed: "eu-west-1",
			want:   "eu-west-1",
		},
	}
	for _, c := range cases {
		t.Run(c.name, func(t *testing.T) {
			if got := edgesFileRegion(env(c.env), c.probed); got != c.want {
				t.Fatalf("edgesFileRegion() = %q, want %q", got, c.want)
			}
		})
	}
}

// FINDING 6 (task 1, 2026-08-22, the plan-2 final review's Important 1): a
// freshly ARMED loop must seed its change-gate from whatever this box last
// published, or two bugs follow — see seedEdgesFileGate's doc. This test
// pins the seed-then-pass contract directly: a process that primes its
// *last from seedEdgesFileGate, then runs a pass against UNCHANGED registry
// state, must write ZERO times. Before this task, edgesFileLoop always
// started with a bare `var last []byte`, so the very first tick after any
// restart always wrote — this is the regression that closes.
func TestEdgesFileSeedGateSkipsWriteOnUnchangedBucketState(t *testing.T) {
	real := release.NewDirStore(t.TempDir())
	reg := edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")

	// A prior process (or the prior pass of this one) already published.
	var priming []byte
	if err := edgesFilePass(context.Background(), real, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &priming); err != nil {
		t.Fatal(err)
	}

	// A fresh process arms: seed the gate from the bucket, as edgesFileLoop
	// now does at loop arm.
	last := seedEdgesFileGate(context.Background(), real, "annie")
	if last == nil {
		t.Fatal("seedEdgesFileGate returned nil, want the prior file's gate body")
	}

	counting := &putCountingStore{Store: real}
	if err := edgesFilePass(context.Background(), counting, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	if counting.puts != 0 {
		t.Fatalf("puts = %d, want 0 — a seeded gate against unchanged state must not write", counting.puts)
	}
}

// The restart-blip case named in the final review: a process restarts,
// arms, and its very FIRST tick hits both a transient IMDS blank AND a real
// registry change (so the pass must write). The write must still carry the
// bucket's held EIP, not the blank probe — seedEdgesFileGate's dual
// contract (gate AND EIP hold) has to survive an ACTUAL write, not just a
// no-op pass, or the hold half of the fix is unverified.
func TestEdgesFileSeedHoldsEIPThroughRestartBlip(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")

	var priming []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &priming); err != nil {
		t.Fatal(err)
	}

	last := seedEdgesFileGate(context.Background(), s, "annie")
	if last == nil {
		t.Fatal("seedEdgesFileGate returned nil, want the prior file's gate body")
	}

	// This tick both hits a transient IMDS blip AND sees a real registry
	// change, so the pass must write.
	seedRoute(t, reg, "second.example.com")
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "", &last); err != nil {
		t.Fatal(err)
	}

	got, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f edgesFile
	if err := json.Unmarshal(got, &f); err != nil {
		t.Fatal(err)
	}
	if f.EIP != "1.2.3.4" {
		t.Fatalf("eip after restart + blank probe = %q, want held %q", f.EIP, "1.2.3.4")
	}
	if _, ok := f.Hosts["second.example.com"]; !ok {
		t.Fatalf("hosts = %+v, want second.example.com present — the write must carry the real registry change too", f.Hosts)
	}
}

// Without the seed, a fresh *last is nil and edgesFilePass's own hold guard
// (`*last != nil`) cannot fire — this pins that this really is the bug the
// two tests above close, not a tautology of the hold logic that would pass
// regardless of seeding.
func TestEdgesFileUnseededLastPublishesBlankEIPOnFirstTickBlip(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")

	var priming []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &priming); err != nil {
		t.Fatal(err)
	}

	// The pre-fix shape: a fresh process's *last starts nil (no seed read).
	var unseeded []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "", &unseeded); err != nil {
		t.Fatal(err)
	}

	got, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f edgesFile
	if err := json.Unmarshal(got, &f); err != nil {
		t.Fatal(err)
	}
	if f.EIP != "" {
		t.Fatalf("eip = %q, want blank — demonstrating why the seed in the tests above is load-bearing, not incidental", f.EIP)
	}
}

// Self-review: does the seed interact correctly with the change gate when
// the bucket file PREDATES the region field? A box upgraded to this build
// finds a bucket file an older build left with no "region" key at all.
// Seeding *last from it must not treat this build's first pass — the one
// that finally sets a real region — as unchanged: Region participates in
// the change gate exactly like every other field (edgesFilePass's doc), so
// a seeded pre-region gate and a fresh body WITH region differ in bytes and
// must write exactly once, not zero and not on every tick after.
func TestEdgesFileSeedPreRegionBucketWritesOnceWhenRegionArrives(t *testing.T) {
	real := release.NewDirStore(t.TempDir())
	reg := edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")

	// Hand-written exactly as a pre-region build would have left it in the
	// bucket: no "region" key present.
	preRegion := []byte(`{"v":1,"box":"annie","eip":"1.2.3.4","generation":"2026-08-01T00:00:00Z","hosts":{"app.example.com":{"role":"home"}}}`)
	if err := putReplacing(context.Background(), real, edgesFileKey("annie"), preRegion); err != nil {
		t.Fatal(err)
	}

	last := seedEdgesFileGate(context.Background(), real, "annie")
	if last == nil {
		t.Fatal("seedEdgesFileGate returned nil")
	}

	// This build now has CARLOS_REGION set: the first pass must write, once.
	counting := &putCountingStore{Store: real}
	if err := edgesFilePass(context.Background(), counting, reg, edgesFile{Box: "annie", Region: "eu-west-1", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	if counting.puts != 1 {
		t.Fatalf("puts = %d, want 1 — a region arriving on a seeded pre-region body is a real change", counting.puts)
	}
	got, _, err := real.Get(context.Background(), edgesFileKey("annie"))
	if err != nil {
		t.Fatal(err)
	}
	var f edgesFile
	if err := json.Unmarshal(got, &f); err != nil {
		t.Fatal(err)
	}
	if f.Region != "eu-west-1" {
		t.Fatalf("region = %q, want eu-west-1", f.Region)
	}

	// A second, identical-region pass must not write again — the gate now
	// includes region on both sides.
	if err := edgesFilePass(context.Background(), counting, reg, edgesFile{Box: "annie", Region: "eu-west-1", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	if counting.puts != 1 {
		t.Fatalf("puts after unchanged second pass = %d, want still 1", counting.puts)
	}
}

// The class mark (#300): platform-minted rows carry platform:true; a stray
// operator row does not, so no remote edge derives a wildcard parent from it.
func TestEdgesFileMarksPlatformRows(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	for _, r := range []registry.Route{
		{Host: "app.acct.apps.test", Kind: "service", Addr: "10.0.0.1:3000", Status: "ready", Platform: true},
		{Host: "prov.acct.apps.test", Kind: "service", Addr: "10.0.0.1:3001", Status: "ready", Provisioned: true},
		{Host: "stray.acct.apps.test", Kind: "service", Addr: "10.0.0.1:3002", Status: "ready"},
		{Host: "pending.acct.apps.test", Kind: "service", Addr: "10.0.0.1:3003", Status: "pending", Platform: true},
	} {
		if err := reg.Upsert(r); err != nil {
			t.Fatal(err)
		}
	}
	var lastBody []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &lastBody); err != nil {
		t.Fatal(err)
	}
	body, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f struct {
		Hosts map[string]struct {
			Platform bool `json:"platform"`
		} `json:"hosts"`
	}
	if err := json.Unmarshal(body, &f); err != nil {
		t.Fatal(err)
	}
	for host, want := range map[string]bool{"app.acct.apps.test": true, "prov.acct.apps.test": true, "stray.acct.apps.test": false} {
		if got := f.Hosts[host].Platform; got != want {
			t.Errorf("%s platform = %v; want %v", host, got, want)
		}
	}
	if _, ok := f.Hosts["pending.acct.apps.test"]; ok {
		t.Error("a non-ready row is published regardless of class")
	}
	// The mark is always written, so a keyless host object can only mean a
	// pre-mark publisher.
	if !strings.Contains(string(body), `"stray.acct.apps.test":{"role":"home","platform":false}`) {
		t.Errorf("mark not emitted for an unclassed row: %s", body)
	}
}

// #287: attached custom domains are published under their own names —
// only when their primary is served AND their DNS points here, marked as
// aliases, never platform-class, catch-alls never, and never over a real
// route. Detaching one republishes without it.
func TestEdgesFilePublishesPointingAliasesOfServedPrimaries(t *testing.T) {
	withheldAliasSaid = sync.Map{} // once per PROCESS: isolate from -count>1
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	if err := reg.Upsert(registry.Route{Host: "app.acct.apps.test", Kind: "service", Addr: "10.0.0.1:3000", Status: "ready", Platform: true}); err != nil {
		t.Fatal(err)
	}
	if err := reg.Upsert(registry.Route{Host: "pending.acct.apps.test", Kind: "service", Addr: "10.0.0.1:3001", Status: "pending"}); err != nil {
		t.Fatal(err)
	}
	if err := reg.Upsert(registry.Route{Host: "real.example.net", Kind: "service", Addr: "10.0.0.1:3002", Status: "ready", Platform: true}); err != nil {
		t.Fatal(err)
	}
	for _, a := range []registry.RouteAlias{
		{Alias: "www.customer.com", Host: "app.acct.apps.test", Account: "acct", App: "app", DNSStatus: "pointing"},
		{Alias: "unpointed.customer.com", Host: "app.acct.apps.test", Account: "acct", App: "app", DNSStatus: "elsewhere"},
		{Alias: "fresh.customer.com", Host: "app.acct.apps.test", Account: "acct", App: "app"},
		{Alias: "*.customer.com", Host: "app.acct.apps.test", Account: "acct", App: "app", DNSStatus: "pointing"},
		{Alias: "orphan.example.org", Host: "pending.acct.apps.test", Account: "acct", App: "pending", DNSStatus: "pointing"},
		{Alias: "real.example.net", Host: "app.acct.apps.test", Account: "acct", App: "app", DNSStatus: "pointing"}, // shadowed
	} {
		if err := reg.UpsertAlias(a); err != nil {
			t.Fatal(err)
		}
	}
	type hostView struct {
		Role     string `json:"role"`
		Platform bool   `json:"platform"`
		Alias    bool   `json:"alias"`
	}
	publish := func() map[string]hostView {
		t.Helper()
		var lastBody []byte
		if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &lastBody); err != nil {
			t.Fatal(err)
		}
		body, _, err := s.Get(context.Background(), "control/edges/annie.json")
		if err != nil {
			t.Fatal(err)
		}
		var f struct {
			Hosts map[string]hostView `json:"hosts"`
		}
		if err := json.Unmarshal(body, &f); err != nil {
			t.Fatal(err)
		}
		return f.Hosts
	}
	var buf strings.Builder
	log.SetOutput(&buf)
	t.Cleanup(func() { log.SetOutput(os.Stderr) })
	hosts := publish()
	h, ok := hosts["www.customer.com"]
	if !ok || h.Role != "home" || !h.Alias || h.Platform {
		t.Errorf("www.customer.com = %+v, %v; want home, alias, not platform", h, ok)
	}
	for _, absent := range []string{"unpointed.customer.com", "fresh.customer.com", "*.customer.com", "orphan.example.org"} {
		if _, ok := hosts[absent]; ok {
			t.Errorf("%s must not be published", absent)
		}
	}
	if h := hosts["real.example.net"]; !h.Platform || h.Alias {
		t.Errorf("an alias colliding with a real route displaced the route's entry: %+v", h)
	}
	// A withheld alias says so once per process, not once per pass.
	publish()
	publish()
	if n := strings.Count(buf.String(), "unpointed.customer.com not published"); n != 1 {
		t.Errorf("withheld line logged %d times over 3 passes; want 1:\n%s", n, buf.String())
	}
	// Detach: gone on the next pass.
	if err := reg.DeleteAlias("www.customer.com"); err != nil {
		t.Fatal(err)
	}
	if _, ok := publish()["www.customer.com"]; ok {
		t.Error("a detached alias was still published")
	}
}

// #305: delegated customer wildcard parents publish as "*.<parent>" in their
// own class — never platform, never over an existing key.
func TestEdgesFilePublishesDelegatedWildcardParents(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.acct.apps.test")
	if err := reg.Upsert(registry.Route{Host: "*.taken.example", Kind: "service", Addr: "10.0.0.1:3001", Status: "ready", Platform: true}); err != nil {
		t.Fatal(err)
	}
	// customer.example has a served catch-all (Catchall claim) → dial half
	// too; certonly.example is a Wildcard claim without Catchall → cert
	// half only; pending.example's catch-all points at an unserved primary.
	if err := reg.Upsert(registry.Route{Host: "pend.acct.apps.test", Kind: "service", Addr: "10.0.0.1:3002", Status: "pending"}); err != nil {
		t.Fatal(err)
	}
	for _, a := range []registry.RouteAlias{
		{Alias: "*.customer.example", Host: "app.acct.apps.test", Account: "acct", App: "app"},
		{Alias: "*.pending.example", Host: "pend.acct.apps.test", Account: "acct", App: "pend"},
	} {
		if err := reg.UpsertAlias(a); err != nil {
			t.Fatal(err)
		}
	}
	for _, w := range []registry.WildcardDomain{
		{Host: "customer.example", Account: "acct", App: "app"},
		{Host: "certonly.example", Account: "acct", App: "app"},
		{Host: "pending.example", Account: "acct", App: "pend"},
		{Host: "*.odd.example", Account: "acct", App: "app"}, // never written by the pass; refused here too
		{Host: "taken.example", Account: "acct", App: "app"}, // a real route owns the key
	} {
		if err := reg.UpsertWildcardDomain(w); err != nil {
			t.Fatal(err)
		}
	}
	var lastBody []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "1.2.3.4", &lastBody); err != nil {
		t.Fatal(err)
	}
	body, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f struct {
		Hosts map[string]struct {
			Role     string `json:"role"`
			Platform bool   `json:"platform"`
			Wildcard bool   `json:"wildcard"`
			Alias    bool   `json:"alias"`
		} `json:"hosts"`
	}
	if err := json.Unmarshal(body, &f); err != nil {
		t.Fatal(err)
	}
	// Marked alias BECAUSE the dial half is on: a catch-all we serve is a
	// materialized claim, and DeploymentRoutes keys the whole "is this
	// somebody's real route" question on that mark. See the end-to-end
	// tripwire below for what an unmarked row does to the claim.
	h, ok := f.Hosts["*.customer.example"]
	if !ok || h.Role != "home" || !h.Wildcard || h.Platform || !h.Alias {
		t.Fatalf("*.customer.example = %+v, %v; want home, wildcard, alias, not platform", h, ok)
	}
	for _, name := range []string{"*.certonly.example", "*.pending.example"} {
		h, ok := f.Hosts[name]
		if !ok || h.Role != "wildcard" || !h.Wildcard || h.Platform || h.Alias {
			t.Errorf("%s = %+v, %v; want the cert half only (role wildcard, unmarked)", name, h, ok)
		}
	}
	if _, ok := f.Hosts["*.*.odd.example"]; ok {
		t.Error("a malformed wildcard_domains row was published")
	}
	// A real route owns the key: it keeps role and class, and the parent's
	// class is added — the reader must still load the PEM everywhere. It
	// stays UNMARKED, which is the other half of the mark's meaning: this
	// hostname really is served as a route, so it must go on outranking any
	// claim another box makes on the same name.
	if h := f.Hosts["*.taken.example"]; !h.Platform || !h.Wildcard || h.Role != "home" || h.Alias {
		t.Errorf("route-owned key = %+v; want platform AND wildcard, role home, unmarked", h)
	}
}

// The tripwire on a loop that ran in production: a served catch-all published
// without the alias mark is read back by DeploymentRoutes as evidence that
// some live box serves that hostname as a REAL route, so the next
// domains.ReconcileAliases pass refuses the very claim that produced the row
// and deletes the alias. Deleting it turns the dial half off, which drops the
// row, which lets the pass after that recreate it — and the name flaps
// on/off forever (*.woodstar.app, every 5-6 minutes, down about half the
// time). Neither half is wrong alone, so only an end-to-end check catches it:
// publish with the real publisher, then fold with the real reader.
func TestEdgesFileServedCatchAllIsNotItsOwnDeploymentRoute(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.acct.apps.test")
	if err := reg.UpsertAlias(registry.RouteAlias{
		Alias: "*.customer.example", Host: "app.acct.apps.test", Account: "acct", App: "app",
	}); err != nil {
		t.Fatal(err)
	}
	if err := reg.UpsertWildcardDomain(registry.WildcardDomain{
		Host: "customer.example", Account: "acct", App: "app",
	}); err != nil {
		t.Fatal(err)
	}
	var lastBody []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie"}, "1.2.3.4", &lastBody); err != nil {
		t.Fatal(err)
	}
	now := time.Now()
	if err := status.WriteBox(context.Background(), s, status.Box{Label: "annie", GeneratedAt: now}); err != nil {
		t.Fatal(err)
	}

	routes := edgesfile.DeploymentRoutes(context.Background(), s, now)
	if routes["*.customer.example"] {
		t.Errorf("routes = %v, want the served catch-all NOT counted as a real route — counting it makes the claim refuse itself every pass", routes)
	}
	// The join really happened: without this, an empty set would pass the
	// assertion above for the wrong reason (a snapshot/label mismatch reads
	// as "nothing known", which is permissive by contract).
	if !routes["app.acct.apps.test"] {
		t.Fatalf("routes = %v, want the box's real route counted — the fold did not join", routes)
	}
}

// The whole EIP fold rests on ONE identity: the `box` name this loop
// publishes under and the `label` the status snapshot is written under must
// be the same string, or edgesfile.EdgeIPs' liveness join drops every edge
// silently and the deployment's edge set degrades to env-only forever — a
// failure with no error, no log line and no red test.
//
// They are the same today because both resolve through metricsBoxLabel over
// the same machine id: edgesFileLoop calls it directly, and statusTick's
// snapshot label is status.Label(Probes.MachineID), which is exactly what
// metricsBoxLabel falls through to off a fleet box. (A fleet box never gets
// here: edgesFileLoop returns early on shouldSkipPublisherElection.) This
// test is the tripwire on that, end to end through the real fold.
func TestEdgesFileBoxNameJoinsTheStatusSnapshotLabel(t *testing.T) {
	const machineID = "ip-10-0-0-7"
	notAFleetBox := func(string) string { return "" }

	box := metricsBoxLabel(notAFleetBox, machineID)
	snapshot := status.CollectBox(nil, status.Probes{MachineID: machineID}, time.Now())
	if box != snapshot.Label {
		t.Fatalf("edges file box %q vs status snapshot label %q — the fold's liveness join needs one name", box, snapshot.Label)
	}

	ctx := context.Background()
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")
	var last []byte
	if err := edgesFilePass(ctx, s, reg, edgesFile{Box: box, Region: "eu-west-1", Placement: "", DataBucket: "", DataBucketRegion: ""}, "203.0.113.7", &last); err != nil {
		t.Fatal(err)
	}
	if err := status.WriteBox(ctx, s, snapshot); err != nil {
		t.Fatal(err)
	}
	got := edgesfile.EdgeIPs(ctx, s, nil, time.Now())
	if len(got) != 1 || got[0] != "203.0.113.7" {
		t.Fatalf("fold = %v, want this box's own EIP — the two writers disagree about its name", got)
	}
}

// The placement code (issue #329): CARLOS_REGION verbatim, additive between
// region and generation, omitted entirely when the box has none — the
// console's armed-placement gate stays dormant on a fleet that never
// publishes it, which is what makes roll order irrelevant.
func TestEdgesFileRawWireBodyPlacementField(t *testing.T) {
	t.Parallel()
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")
	var last []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "quiet-harbour", Region: "eu-west-2", Placement: "uk", DataBucket: "", DataBucketRegion: ""}, "203.0.113.10", &last); err != nil {
		t.Fatal(err)
	}
	got, _, err := s.Get(context.Background(), "control/edges/quiet-harbour.json")
	if err != nil {
		t.Fatal(err)
	}
	var probe struct {
		Placement  string `json:"placement"`
		Generation string `json:"generation"`
	}
	if err := json.Unmarshal(got, &probe); err != nil {
		t.Fatal(err)
	}
	want := `{"v":1,"box":"quiet-harbour","eip":"203.0.113.10","region":"eu-west-2","placement":"uk","hibernation_configured":false,"serves_shared_pool":false,"accepts_inbound":false,"moves_protocol":0,"seeds_protocol":0,"generation":"` +
		probe.Generation + `","hosts":{"app.example.com":{"role":"home","platform":false}}}`
	if string(got) != want {
		t.Fatalf("raw wire body (placement set) =\n%s\nwant\n%s", got, want)
	}

	// Unset placement publishes no key at all.
	s2, reg2 := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg2, "app.example.com")
	var last2 []byte
	if err := edgesFilePass(context.Background(), s2, reg2, edgesFile{Box: "quiet-harbour", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "203.0.113.10", &last2); err != nil {
		t.Fatal(err)
	}
	got2, _, err := s2.Get(context.Background(), "control/edges/quiet-harbour.json")
	if err != nil {
		t.Fatal(err)
	}
	if strings.Contains(string(got2), "placement") {
		t.Fatalf("raw wire body with no CARLOS_REGION carries a placement key: %s", got2)
	}
}

// Data-bucket coordinates (instance-move spec): published verbatim from the
// hibernate env pair, absent when unset — the same additive rule as
// placement.
func TestEdgesFileRawWireBodyDataBucketFields(t *testing.T) {
	t.Parallel()
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")
	var last []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "quiet-harbour", Region: "eu-west-2", Placement: "uk", DataBucket: "carlos-tito-uk-1", DataBucketRegion: "eu-west-2"}, "203.0.113.10", &last); err != nil {
		t.Fatal(err)
	}
	got, _, err := s.Get(context.Background(), "control/edges/quiet-harbour.json")
	if err != nil {
		t.Fatal(err)
	}
	var probe struct {
		DataBucket       string `json:"data_bucket"`
		DataBucketRegion string `json:"data_bucket_region"`
	}
	if err := json.Unmarshal(got, &probe); err != nil {
		t.Fatal(err)
	}
	if probe.DataBucket != "carlos-tito-uk-1" || probe.DataBucketRegion != "eu-west-2" {
		t.Fatalf("data bucket fields = %+v", probe)
	}
	s2, reg2 := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg2, "app.example.com")
	var last2 []byte
	if err := edgesFilePass(context.Background(), s2, reg2, edgesFile{Box: "quiet-harbour", Region: "", Placement: "", DataBucket: "", DataBucketRegion: ""}, "203.0.113.10", &last2); err != nil {
		t.Fatal(err)
	}
	got2, _, err := s2.Get(context.Background(), "control/edges/quiet-harbour.json")
	if err != nil {
		t.Fatal(err)
	}
	if strings.Contains(string(got2), "data_bucket") {
		t.Fatalf("unset hibernate env still published a data_bucket key: %s", got2)
	}
}

// --- #162: the replica placement's edges-file entries ----------------------

// TestEdgesFilePublishesReplicaEntries pins the data plane of replica
// placements: a served row minted from a role=replica record — the Replica
// mark set, Account/App carried so the account apex derives — publishes its
// own host and the account's platform apex under role "home" with the
// replica mark set. A PLAIN row never gains the mark, whatever placement the
// box publishes; the mark is the row's, not the box's. (Raw map decode, not
// the struct: the test is about the WIRE, and a struct field would make an
// omitempty typo invisible.)
func TestEdgesFilePublishesReplicaEntries(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	if err := reg.Upsert(registry.Route{
		Host: "acme-uk.go.tito.io", Slug: "acme-uk", Kind: "service", Addr: "10.0.0.1:3000",
		Status: "ready", Account: "bab", App: "tito", Region: "uk",
		Replica: true,
	}); err != nil {
		t.Fatal(err)
	}
	// The home row, on the same box only for the test's convenience — its
	// entries must NOT carry the mark even when it sits here.
	if err := reg.Upsert(registry.Route{
		Host: "acme.go.tito.io", Slug: "acme", Kind: "service", Addr: "10.0.0.2:3000",
		Status: "ready", Account: "bab", App: "tito", Region: "ie",
	}); err != nil {
		t.Fatal(err)
	}

	var lastBody []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "ukbox", Placement: "uk"}, "1.2.3.4", &lastBody); err != nil {
		t.Fatal(err)
	}
	got, _, err := s.Get(context.Background(), "control/edges/ukbox.json")
	if err != nil {
		t.Fatal(err)
	}
	var raw struct {
		Hosts map[string]struct {
			Role    string `json:"role"`
			Replica bool   `json:"replica"`
		} `json:"hosts"`
	}
	if err := json.Unmarshal(got, &raw); err != nil {
		t.Fatal(err)
	}
	for _, name := range []string{"acme-uk.go.tito.io"} {
		h, ok := raw.Hosts[name]
		if !ok {
			t.Errorf("replica row published nothing at %s (hosts: %+v)", name, raw.Hosts)
			continue
		}
		if h.Role != "home" || !h.Replica {
			t.Errorf("%s = %+v, want role home with the replica mark", name, h)
		}
	}
	if h := raw.Hosts["acme.go.tito.io"]; h.Replica {
		t.Errorf("the home row's entry carries the replica mark: %+v — the mark is the ROW's, and the home row is not a replica", h)
	}
	// The account apex is deliberately NOT published: a name the replica box
	// has no local row for must not be claimed (an apex key here would let
	// foldHomes' first-sorted-box rule hand the apex dial target to a
	// replica box fleet-wide).
	if _, ok := raw.Hosts["tito.bab"]; ok {
		t.Errorf("replica row published the account apex tito.bab — a name this box has no local row for must not be claimed (hosts: %+v)", raw.Hosts)
	}
}

// TestEdgesFileReplicaMarkFollowsTheRow pins the fail-closed default: a
// plain served row publishes exactly as before #162 — no replica key at all
// on the wire — on a box with no placement published, with no placement, or
// with any placement. The mark cannot leak from the box's identity into an
// unrelated row.
func TestEdgesFileReplicaMarkFollowsTheRow(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	if err := reg.Upsert(registry.Route{
		Host: "acme.go.tito.io", Kind: "service", Addr: "10.0.0.1:3000",
		Status: "ready",
	}); err != nil {
		t.Fatal(err)
	}
	for _, ident := range []edgesFile{{Box: "annie"}, {Box: "annie", Placement: "uk"}} {
		var lastBody []byte
		if err := edgesFilePass(context.Background(), s, reg, ident, "1.2.3.4", &lastBody); err != nil {
			t.Fatal(err)
		}
		got, _, err := s.Get(context.Background(), "control/edges/annie.json")
		if err != nil {
			t.Fatal(err)
		}
		var raw struct {
			Hosts map[string]struct {
				Replica bool `json:"replica"`
			} `json:"hosts"`
		}
		if err := json.Unmarshal(got, &raw); err != nil {
			t.Fatal(err)
		}
		if h, ok := raw.Hosts["acme.go.tito.io"]; ok && h.Replica {
			t.Errorf("hosts = %+v, want no replica mark on a plain row (box placement %q)", raw.Hosts, ident.Placement)
		}
	}
}

// ---- owners (#175 P7, the edge-local door) ---------------------------------

// publishHosts runs one pass on box "annie" and reads its hosts back.
func publishHosts(t *testing.T, reg *registry.Registry) map[string]edgeHost {
	t.Helper()
	s := release.NewDirStore(t.TempDir())
	var last []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie"}, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	body, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f edgesFile
	if err := json.Unmarshal(body, &f); err != nil {
		t.Fatal(err)
	}
	return f.Hosts
}

func ownedRoute(t *testing.T, reg *registry.Registry, host, account, app string) {
	t.Helper()
	if err := reg.Upsert(registry.Route{Host: host, Kind: "service", Addr: "10.0.0.1:3000", Status: "ready", Account: account, App: app}); err != nil {
		t.Fatal(err)
	}
}

func wantOwner(t *testing.T, hosts map[string]edgeHost, host, account, app string) {
	t.Helper()
	h, ok := hosts[host]
	if !ok {
		t.Fatalf("%s not published: %+v", host, hosts)
	}
	if h.Account != account || h.App != app {
		t.Errorf("%s owner = %q/%q, want %q/%q", host, h.Account, h.App, account, app)
	}
}

// A home row publishes its own account and app, which the door checks
// remotely. A row with no app has no owner a door key could name.
func TestEdgesFilePublishesTheOwnerOfAHomeRow(t *testing.T) {
	reg := edgesTestRegistry(t)
	ownedRoute(t, reg, "acme.go.tito.io", "bae", "titogo")
	ownedRoute(t, reg, "*.go.tito.io", "bae", "titogo")
	seedRoute(t, reg, "appless.example.com")
	hosts := publishHosts(t, reg)
	wantOwner(t, hosts, "acme.go.tito.io", "bae", "titogo")
	wantOwner(t, hosts, "*.go.tito.io", "bae", "titogo")
	wantOwner(t, hosts, "appless.example.com", "", "")
}

// An alias is served by its primary's route, so it carries the primary's
// owner, not the alias row's own columns.
func TestEdgesFilePublishesAnAliasWithItsPrimarysOwner(t *testing.T) {
	withheldAliasSaid = sync.Map{}
	reg := edgesTestRegistry(t)
	ownedRoute(t, reg, "acme.go.tito.io", "bae", "titogo")
	if err := reg.UpsertAlias(registry.RouteAlias{Alias: "tickets.acme.com", Host: "acme.go.tito.io",
		Account: "bae", App: "somethingelse", DNSStatus: "pointing"}); err != nil {
		t.Fatal(err)
	}
	wantOwner(t, publishHosts(t, reg), "tickets.acme.com", "bae", "titogo")
}

// The served catch-all carries the wildcard claim's owner, when the primary
// it serves agrees.
func TestEdgesFilePublishesTheServedCatchAllsOwner(t *testing.T) {
	reg := edgesTestRegistry(t)
	ownedRoute(t, reg, "acme.go.tito.io", "bae", "titogo")
	if err := reg.UpsertAlias(registry.RouteAlias{Alias: "*.acme.com", Host: "acme.go.tito.io", Account: "bae", App: "titogo"}); err != nil {
		t.Fatal(err)
	}
	for _, w := range []registry.WildcardDomain{
		{Host: "acme.com", Account: "bae", App: "titogo"},
		{Host: "certonly.com", Account: "bae", App: "titogo"},
	} {
		if err := reg.UpsertWildcardDomain(w); err != nil {
			t.Fatal(err)
		}
	}
	hosts := publishHosts(t, reg)
	wantOwner(t, hosts, "*.acme.com", "bae", "titogo")
	// The cert half dials nothing, so it names no owner.
	wantOwner(t, hosts, "*.certonly.com", "", "")
}

// Review focus 2: a hostname whose path prefixes reach two apps publishes no
// owner, nor does its alias, so the door refuses it remotely. A hostname whose
// prefixes all reach one app still publishes that owner.
func TestEdgesFilePublishesNoOwnerForAMixedPathPrefixHostname(t *testing.T) {
	withheldAliasSaid = sync.Map{}
	reg := edgesTestRegistry(t)
	ownedRoute(t, reg, "ti.to", "bae", "titogo")
	ownedRoute(t, reg, "a.go.tito.io", "bae", "titogo")
	ownedRoute(t, reg, "b.classic.tito.io", "bae", "classic")
	ownedRoute(t, reg, "one.example", "bae", "titogo")
	for _, p := range []registry.RoutePath{
		{Host: "ti.to", Prefix: "a", Target: "a.go.tito.io", Account: "bae", App: "titogo"},
		{Host: "ti.to", Prefix: "b", Target: "b.classic.tito.io", Account: "bae", App: "titogo"},
		{Host: "one.example", Prefix: "a", Target: "a.go.tito.io", Account: "bae", App: "titogo"},
	} {
		if err := reg.UpsertPath(p); err != nil {
			t.Fatal(err)
		}
	}
	if err := reg.UpsertAlias(registry.RouteAlias{Alias: "tickets.example", Host: "ti.to", Account: "bae", App: "titogo", DNSStatus: "pointing"}); err != nil {
		t.Fatal(err)
	}
	hosts := publishHosts(t, reg)
	wantOwner(t, hosts, "ti.to", "", "")
	wantOwner(t, hosts, "tickets.example", "", "")
	wantOwner(t, hosts, "one.example", "bae", "titogo")
	wantOwner(t, hosts, "b.classic.tito.io", "bae", "classic")
}

// The two eligibility fields are NOT omitempty: absent means "a writer
// that predates the field" (unknown), false means "no" (spec §6.1).
func TestEdgesFileRawWireBodyEligibilityFields(t *testing.T) {
	t.Parallel()
	for _, want := range []bool{true, false} {
		s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
		seedRoute(t, reg, "app.example.com")
		var last []byte
		ident := edgesFile{Box: "quiet-harbour", Region: "eu-west-2", Placement: "uk",
			ServesSharedPool: want, AcceptsInbound: want}
		if err := edgesFilePass(context.Background(), s, reg, ident, "203.0.113.10", &last); err != nil {
			t.Fatal(err)
		}
		got, _, err := s.Get(context.Background(), "control/edges/quiet-harbour.json")
		if err != nil {
			t.Fatal(err)
		}
		var raw map[string]any
		if err := json.Unmarshal(got, &raw); err != nil {
			t.Fatal(err)
		}
		for _, k := range []string{"serves_shared_pool", "accepts_inbound"} {
			v, present := raw[k]
			if !present || v != want {
				t.Fatalf("%s = %v (present %v), want %v always published", k, v, present, want)
			}
		}
	}
}

// What the loop publishes is the reconcile config's own answer, for every
// spelling an operator might write. CARLOS_POOLS=",tito" parses to
// ["tito"] (agent.go's parser drops empty elements), so it does NOT serve
// the shared pool and must publish false (codex R3-3).
func TestEdgesFileEligibilityFollowsTheReconcileConfig(t *testing.T) {
	cases := []struct {
		pools, inbound string
		shared, accept bool
	}{
		{"", "", true, true},
		{"tito", "", false, true},
		{",tito", "", false, true},
		{"", "none", true, false},
		{"tito", "NONE", false, false},
	}
	for _, c := range cases {
		getenv := func(k string) string {
			switch k {
			case "CARLOS_POOLS":
				return c.pools
			case "CARLOS_INBOUND":
				return c.inbound
			}
			return ""
		}
		shared, inbound := edgesFileEligibility(getenv)
		cfg := provisionTickConfig(getenv)
		wantShared, wantInbound := cfg.SharedInstanceEligibility()
		if shared != wantShared || inbound != wantInbound {
			t.Fatalf("%+v: published (%v, %v) but the reconciler says (%v, %v)", c, shared, inbound, wantShared, wantInbound)
		}
		if shared != c.shared || inbound != c.accept {
			t.Fatalf("%+v: got (%v, %v), want (%v, %v)", c, shared, inbound, c.shared, c.accept)
		}
	}
}

// R9: the box publishes the fingerprint of its secrets key's public half,
// never the key; no key, or a key that does not parse, publishes nothing.
func TestEdgesFileSecretsKeyFingerprint(t *testing.T) {
	t.Parallel()
	priv, err := ecdh.P256().NewPrivateKey(bytes.Repeat([]byte{1}, 32))
	if err != nil {
		t.Fatal(err)
	}
	privB64 := base64.StdEncoding.EncodeToString(priv.Bytes())
	pubB64 := base64.StdEncoding.EncodeToString(priv.PublicKey().Bytes())
	env := func(v string) func(string) string {
		return func(k string) string {
			if k == "CARLOS_SECRETS_KEY" {
				return v
			}
			return ""
		}
	}
	want := appconfig.KeyFingerprint(priv.PublicKey())
	if got := edgesFileSecretsFP(env(privB64)); got != want {
		t.Fatalf("with a key = %q, want %q", got, want)
	}
	for _, v := range []string{"", "not base64!", base64.StdEncoding.EncodeToString([]byte("short"))} {
		if got := edgesFileSecretsFP(env(v)); got != "" {
			t.Errorf("CARLOS_SECRETS_KEY=%q published %q, want nothing", v, got)
		}
	}

	for _, fp := range []string{want, ""} {
		s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
		seedRoute(t, reg, "app.example.com")
		var last []byte
		ident := edgesFile{Box: "quiet-harbour", Region: "eu-west-2", Placement: "uk", SecretsKeyFP: fp}
		if err := edgesFilePass(context.Background(), s, reg, ident, "203.0.113.10", &last); err != nil {
			t.Fatal(err)
		}
		body, _, err := s.Get(context.Background(), "control/edges/quiet-harbour.json")
		if err != nil {
			t.Fatal(err)
		}
		has := strings.Contains(string(body), `"secrets_key_fp"`)
		if has != (fp != "") {
			t.Fatalf("fp %q: key present = %v in %s", fp, has, body)
		}
		for _, secret := range []string{privB64, pubB64} {
			if strings.Contains(string(body), secret) {
				t.Fatal("the edges file carries key material")
			}
		}
	}
}

func TestEdgesFileCapabilityFollowsTheFlag(t *testing.T) {
	env := func(v string) func(string) string {
		return func(k string) string {
			if k == "CARLOS_REGION_HA" {
				return v
			}
			return ""
		}
	}
	if got := edgesFileCapabilities(env("")); len(got) != 0 {
		t.Fatalf("unset: %v", got)
	}
	if got := edgesFileCapabilities(env("1")); len(got) != 1 || got[0] != "region-ha-1" {
		t.Fatalf("set: %v", got)
	}
	if got := edgesFileCapabilities(env("0")); len(got) != 0 {
		t.Fatalf("\"0\" is off: %v", got)
	}
}

func TestEdgesFileRawWireBodyCarriesBoxEvidence(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")
	var last []byte
	ident := edgesFile{Box: "annie", BoxID: "i-0abc", Capabilities: []string{"region-ha-1"},
		Headroom: &edgeHeadroom{MemFreeMiB: 2210, DiskFreeMiB: 31200, Awake: 14}}
	if err := edgesFilePass(context.Background(), s, reg, ident, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	body, _, err := s.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var raw map[string]json.RawMessage
	if err := json.Unmarshal(body, &raw); err != nil {
		t.Fatal(err)
	}
	for key, want := range map[string]string{
		"box_id":       `"i-0abc"`,
		"capabilities": `["region-ha-1"]`,
		"headroom":     `{"mem_free_mib":2210,"disk_free_mib":31200,"awake":14}`,
	} {
		if string(raw[key]) != want {
			t.Errorf("%s = %s, want %s", key, raw[key], want)
		}
	}
	if _, ok := raw["draining"]; ok {
		t.Error("draining:false must be omitted")
	}
}

func TestEdgesFileOmitsBoxEvidenceWhenAbsent(t *testing.T) {
	s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
	var last []byte
	if err := edgesFilePass(context.Background(), s, reg, edgesFile{Box: "annie"}, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	body, _, _ := s.Get(context.Background(), "control/edges/annie.json")
	for _, key := range []string{"box_id", "capabilities", "draining", "headroom"} {
		if bytes.Contains(body, []byte(`"`+key+`"`)) {
			t.Errorf("%s present in %s", key, body)
		}
	}
}

func TestEdgesFileHeadroomAloneDoesNotRewriteTheFile(t *testing.T) {
	st := &putCountingStore{Store: release.NewDirStore(t.TempDir())}
	reg := edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")
	var last []byte
	ident := edgesFile{Box: "annie", Headroom: &edgeHeadroom{MemFreeMiB: 100}}
	if err := edgesFilePass(context.Background(), st, reg, ident, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	ident.Headroom = &edgeHeadroom{MemFreeMiB: 99}
	if err := edgesFilePass(context.Background(), st, reg, ident, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	if st.puts != 1 {
		t.Fatalf("puts = %d, want 1: a headroom change alone is not a reason to write", st.puts)
	}
}

// The loop's timed pass refreshes headroom even when nothing else moved.
func TestEdgesFileTimedPassRefreshesHeadroom(t *testing.T) {
	st := &putCountingStore{Store: release.NewDirStore(t.TempDir())}
	reg := edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")
	var last []byte
	ident := edgesFile{Box: "annie", Headroom: &edgeHeadroom{MemFreeMiB: 100}}
	if err := edgesFileWrite(context.Background(), st, reg, ident, "1.2.3.4", &last, false); err != nil {
		t.Fatal(err)
	}
	ident.Headroom = &edgeHeadroom{MemFreeMiB: 42}
	if err := edgesFileWrite(context.Background(), st, reg, ident, "1.2.3.4", &last, true); err != nil {
		t.Fatal(err)
	}
	if st.puts != 2 {
		t.Fatalf("puts = %d, want 2: the timed pass must publish the new reading", st.puts)
	}
	body, _, err := st.Get(context.Background(), "control/edges/annie.json")
	if err != nil {
		t.Fatal(err)
	}
	var f edgesFile
	if err := json.Unmarshal(body, &f); err != nil || f.Headroom == nil || f.Headroom.MemFreeMiB != 42 {
		t.Fatalf("published headroom = %+v, err %v", f.Headroom, err)
	}
	// A box that publishes no headroom keeps today's behaviour exactly:
	// a timed pass with nothing changed writes nothing.
	plain := &putCountingStore{Store: release.NewDirStore(t.TempDir())}
	var plainLast []byte
	for i := 0; i < 2; i++ {
		if err := edgesFileWrite(context.Background(), plain, reg, edgesFile{Box: "betty"}, "1.2.3.4", &plainLast, true); err != nil {
			t.Fatal(err)
		}
	}
	if plain.puts != 1 {
		t.Fatalf("puts = %d, want 1 for a box with no headroom", plain.puts)
	}
}

// A restart must not rewrite an unchanged file just because the stored
// copy carries a headroom reading.
func TestEdgesFileSeededGateIgnoresStoredHeadroom(t *testing.T) {
	st := &putCountingStore{Store: release.NewDirStore(t.TempDir())}
	reg := edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")
	var last []byte
	ident := edgesFile{Box: "annie", Headroom: &edgeHeadroom{MemFreeMiB: 100}}
	if err := edgesFilePass(context.Background(), st, reg, ident, "1.2.3.4", &last); err != nil {
		t.Fatal(err)
	}
	seeded := seedEdgesFileGate(context.Background(), st, "annie")
	ident.Headroom = &edgeHeadroom{MemFreeMiB: 7}
	if err := edgesFilePass(context.Background(), st, reg, ident, "1.2.3.4", &seeded); err != nil {
		t.Fatal(err)
	}
	if st.puts != 1 {
		t.Fatalf("puts = %d, want 1", st.puts)
	}
}

func TestEdgesFileStampIsOmittedWhenZero(t *testing.T) {
	b, _ := json.Marshal(edgeHost{Role: "home"})
	if bytes.Contains(b, []byte("stamp")) {
		t.Fatalf("zero stamp on the wire: %s", b)
	}
	b, _ = json.Marshal(edgeHost{Role: "home", Stamp: 41})
	if !bytes.Contains(b, []byte(`"stamp":41`)) {
		t.Fatalf("stamp missing: %s", b)
	}
}

// The move door (Task 4) admits a move only when every edges file of both
// regions shows the box's armed floor and its verdict on carlos.prev, so
// the writer publishes them from the box's own files at every write.
func TestEdgesFilePublishesMovesProtocolFloorAndPrev(t *testing.T) {
	t.Parallel()
	type published struct {
		MovesProtocol *int    `json:"moves_protocol"`
		Floor         *string `json:"moves_floor_min_release"`
		Prev          *string `json:"prev_release"`
		Allowed       *string `json:"prev_allowed_for"`
	}
	publish := func(t *testing.T, dd, opt string) (published, string) {
		t.Helper()
		s, reg := release.NewDirStore(t.TempDir()), edgesTestRegistry(t)
		seedRoute(t, reg, "app.example.com")
		var last []byte
		ident := withMovesFields(edgesFile{Box: "quiet-harbour"}, dd, opt)
		if err := edgesFilePass(context.Background(), s, reg, ident, "203.0.113.10", &last); err != nil {
			t.Fatal(err)
		}
		body, _, err := s.Get(context.Background(), "control/edges/quiet-harbour.json")
		if err != nil {
			t.Fatal(err)
		}
		var p published
		if err := json.Unmarshal(body, &p); err != nil {
			t.Fatal(err)
		}
		return p, string(body)
	}

	// Nothing armed, no carlos.prev.
	dd, opt := t.TempDir(), t.TempDir()
	p, body := publish(t, dd, opt)
	if p.MovesProtocol == nil || *p.MovesProtocol != moves.ProtocolVersion || !strings.Contains(body, `"moves_protocol":1`) {
		t.Fatalf("moves_protocol missing: %s", body)
	}
	if p.Floor != nil || p.Allowed != nil || p.Prev == nil || *p.Prev != "none" {
		t.Fatalf("unarmed box with no carlos.prev published %s", body)
	}

	// A carlos.prev with no sidecar: its release is unknown, so absent.
	os.WriteFile(systemPrevPath(opt), []byte("#!/bin/sh\n"), 0o755)
	if p, body = publish(t, dd, opt); p.Prev != nil {
		t.Fatalf("carlos.prev without a sidecar published %s", body)
	}

	// Armed, judged: every value as the box's files hold it, one line each.
	if err := writeLocalFloor(dd, moves.Floor{Min: 1, MinRelease: "v0.30.0"}); err != nil {
		t.Fatal(err)
	}
	if err := writePrevVersion(opt, "v0.31.0"); err != nil {
		t.Fatal(err)
	}
	writeFileDurable(filepath.Join(opt, moves.PrevAllowedFile), []byte("v0.30.0\n"), 0o644)
	p, body = publish(t, dd, opt)
	if p.Floor == nil || *p.Floor != "v0.30.0" || p.Prev == nil || *p.Prev != "v0.31.0" || p.Allowed == nil || *p.Allowed != "v0.30.0" {
		t.Fatalf("armed box published %s", body)
	}

	// No verdict: absent, which the door reads as below the floor.
	os.Remove(filepath.Join(opt, moves.PrevAllowedFile))
	if p, body = publish(t, dd, opt); p.Allowed != nil {
		t.Fatalf("no verdict, yet published %s", body)
	}
}

// Region HA spec 2 §7 reads a box's edges file as stale after 15 minutes
// (boxchoice.MaxEdgesAge), and the gate clears Generation, so a quiet box
// stays placeable only if its timed pass rewrites an UNCHANGED body. With
// headroom published (region HA on) it does, every timed pass (at most six
// minutes apart); an untimed pass with nothing changed does not; and with
// region HA off (no headroom) nothing is ever rewritten.
func TestEdgesFileQuietBoxStaysFreshOnTimedPassesOnlyWithRegionHA(t *testing.T) {
	ctx, reg := context.Background(), edgesTestRegistry(t)
	seedRoute(t, reg, "app.example.com")
	run := func(ident edgesFile) (untimedPuts, timedPuts int) {
		st := &putCountingStore{Store: release.NewDirStore(t.TempDir())}
		var last []byte
		if err := edgesFileWrite(ctx, st, reg, ident, "1.2.3.4", &last, false); err != nil {
			t.Fatal(err)
		}
		if err := edgesFileWrite(ctx, st, reg, ident, "1.2.3.4", &last, false); err != nil {
			t.Fatal(err)
		}
		untimedPuts = st.puts
		if err := edgesFileWrite(ctx, st, reg, ident, "1.2.3.4", &last, true); err != nil {
			t.Fatal(err)
		}
		return untimedPuts, st.puts
	}
	on := edgesFile{Box: "annie", Capabilities: []string{capRegionHA1},
		Headroom: &edgeHeadroom{MemFreeMiB: 100, DiskFreeMiB: 100, Awake: 1, MemTotalMiB: 1000, DiskTotalMiB: 1000}}
	if untimed, timed := run(on); untimed != 1 || timed != 2 {
		t.Fatalf("region HA on: puts = %d untimed, %d after a timed pass; want 1, 2", untimed, timed)
	}
	if untimed, timed := run(edgesFile{Box: "annie"}); untimed != 1 || timed != 1 {
		t.Fatalf("region HA off: puts = %d untimed, %d after a timed pass; want 1, 1", untimed, timed)
	}
}